The Metropolitan Water District of Southern California manages a library and archival repository documenting the activities of the organization and resources of interest to the greater history of the Los Angeles region. 

The Mojave Desert Archives preserves the history of transcontinental travel to the Los Angeles region through the Mojave Desert of eastern California. Route 66, National Old Trails Road, the Mojave Wagon Road, the Santa Fe Railway (now BNSF), Union Pacific Railroad, and Interstate highways were and are major transit routes through the desert terminating in the Los Angeles basin.

Special Collections and Archives houses the UC Irvine Libraries' collections of rare books, manuscripts, archives, photographs, and other rare and special materials. Major collections include the Critical Theory Archive, the Southeast Asian Archive, and the University Archives, as well as in-depth collections on Orange County and California history, dance and performing arts, 20th-century…